Solris a high-performance, basedLucenefull-text search service.SolrrightLuceneexpanded, provides a ratioLuceneA richer query language and a powerful full-text search function are implemented, with a high degree of reliability.
Extensibility. At the same time fromSolr 4.0Version starts, supportsSolrCloudmodel.

in aMapReduceapplication,mapThe output of the function is viaMapReduce? ?After processing, send toreduceletter number. This process belongs to? ?Sort and group pairs.

FusionInsigt HD which of the following components can be used for data collection? (multiple choice)

FusionInsight HDin, aboutHive UDFsSecondary development, is the following description correct? (multiple choice)

FusionInsight HD assuming a topology that setsspoutConcurrency is3,bot1Concurrency is 2,bot2Concurrency is3,workerThe number is2,Sobol1ofexecutorexistworkerHow is it distributed?